In order to encode a new memory you must
Whether a new memory enters the brain
The number and locations of connections in your brain cells, storing a memory
The ability of the brain to quickly find the memory
What activity causes new cells to grow in the hippocampus, increases recall for up to 4 hours, and increases levels of serotonin in the brain.
listening to music
playing video games
Which of the following lead to better consolidation of a new memory?
Taking notes during a lecture
Reviewing material within 24 hours
Reviewing material in different ways
Waiting to study right before the test
Serotonin, dopamine and norepinephrine are all neurotransmitters
Which of the following are possessed by all cells? (Choose all that apply)
Golgi apparatus and other organelles
Microfilaments and microtublues, that give the cell shape and act as the "highways" in a cell are called _________.
A gel like substance filling the area between the plasma membrane and the nucleus is called ____________.
The fluid and dynamic boundary made mostly of phospholipids is called ______________.
Membrane carbohydrates are molecules that form specialized sites on the cell's surface which allow cells to recognize each other
What are the molecules, embedded in the membrane, which regulate the fluidity of the cell membrane and changing temperature?
What molecules are major components of the plasma membrane? (Choose all that apply)
nucleic acids (DNA, RNA)
What flows from high to low? (Choose the ONE best answer)
Molecules, from high to lower concentration
Charged particles, from areas of high charge to areas of lower charge
Molecules, from areas of high pressure to areas of lower pressure
all of the above
none of the above
Carbon dioxide moving from 10% concentration in a cell's cytosol, to a 7% concentration outside the cell uses active cellular transport
Sodium ions moving from 4% outside to 10% inside needs active cellular transport.
Sugars moving from 5% concentration in the blood, to 3 % in the cells uses passive cellular transport.
Water moving from a cell that is 95% water out to the surrounding solution that is 90% is needs active cellular transport.
The movement from high concentration to lower concentration through some portion of the cell membrane is called ___________.
The diffusion of water across the cell membrane is called __________.
The difference (in concentration or charge) of any substance, between the inside and the outside of the cell is called ________________.
The movement of molecules from high to low concentration, through a one-way protein valve (like a turnstile) in the cell membrane is called ________________.
Oxygen and water molecules moving from high to low concentration will pass between the phospholipids of the membrane
Transmembrane protein pumps are used to transport substances (all except gases and water) from LOW to HIGH
Sugar and charged calcium ions, moving from high to low concentration will pass using a channel protein membrane "door"
Exocytosis and endocytosis are how very large particles get moved out of and in to through the cell membrane.
Energy is required:
When pumping ions from high concentration to lower concentration
For facilitated diffusion
When moving fat or lipids from lower to higher concentrations
When oxygen moves from oxygen rich to oxygen starved cells
Which way will the water molecules move if a cell, whose cytosol is 95% water is placed in a test-tube of salt water (10% salt, 90% water)?
into the cell
no net flow in or out
out of the cell
Which way will water molecules move if a cell, whose cytosol is 95% water, is placed in a test-tube of 100% water?
In which case will the flow of sugar be FASTEST?
Sugar concentration outside of cell: 10% and Sugar concentration inside the cell: 8%
Sugar concentration outside of cell: 10% and Sugar concentration inside the cell: 2%
Sugar concentration outside of cell: 6% and Sugar concentration inside the cell: 2%